Alex, Maggie, and Aly each want to run \( 5 \frac{1}{4} \) miles this week. The chart below shows how may miles each person has completed. Find out how many more miles they each must run to meet the goal they set.

Suppose we know that the last two digits of a number are 50. Use appropriate divisibility tests to select all the statements that we know *must* be true. divisible by 4 divisible by 9 divisible by 5 divisible by 3 divisible by 10 divisible by 2 \( > \) Next Question

If you applied the divisibility test for 8 to determine whether or not the natural number 437739462455 is divisible by 8 , you would check to see if 8 divides what number? \( > \) Next Question

Suppose we know that the *sum* of the digits of a number is 42. Use appropriate divisibility tests to select all the statements that we know *must* be true. divisible by 5 divisible by 3 divisible by 9 divisible by 2 divisible by 10 divisible by 4 \( > \) Next Question

Find the LCM of this set of numbers 27 and 45

\( A=\left[\begin{array}{ccc}1 & 3 & 5 \\ 5 & -1 & 1 \\ 3 & 0 & -2\end{array}\right] \quad B=\left[\begin{array}{ccc}3 & -5 & 2 \\ 3 & 4 & 0 \\ 2 & 1 & -3\end{array}\right] \quad C=\left[\begin{array}{ccc}2.1 & -4 & 1.5 \\ -3 & 5 & 0.3 \\ 5.4 & 2 & -2.8\end{array}\right] \) Find the value in row 2 columin 1 of \( A+B \).